Harmonia

About

Harmonia is ranked #25 of 60 in artifact repository software on Inferse. It runs on Linux, Self-hosted.

Compared on artifact repository software

Self hosted

Yesgithub.com

Facts

What it does

Harmonia is a Nix binary cache that serves the /nix/store over HTTP and is written in Rust.github.com · 4 Oct 2026

NAR streaming

It supports HTTP range requests for NAR file streaming.github.com · 4 Oct 2026

Build logs

It supports streaming build logs.github.com · 4 Oct 2026

Package serving

Its /serve/<narhash>/ endpoint can serve package contents and can discover index.html to serve websites directly from the Nix store.github.com · 4 Oct 2026

Compression

It can transparently compress content with zstd.github.com · 4 Oct 2026

TLS

Harmonia can provide TLS encryption itself when no frontend web server is used.github.com · 4 Oct 2026

NixOS

The README documents configuring Harmonia as a public binary cache with a NixOS module and nginx as an HTTPS frontend.github.com · 4 Oct 2026

Signing

Harmonia does not sign narinfo by default without a secret key; signing can be enabled by providing private key paths.github.com · 4 Oct 2026

Monitoring

Harmonia exposes Prometheus metrics at the /metrics endpoint, and the repository includes a Grafana dashboard.github.com · 4 Oct 2026

Metadata access

Since version 3.1.0, harmonia-cache reads store metadata directly from db.sqlite without connecting to nix-daemon.github.com · 4 Oct 2026

Nix garbage collection

The 3.3.0 release adds harmonia-gc, which removes garbage from the Nix store and can run while nix-daemon is building.github.com · 4 Oct 2026

License

The project is licensed under the MIT License.github.com · 4 Oct 2026

Where it ranks on Inferse

• Best Artifact Repository Software in 2026#25 of 60
• Best Build Cache Software in 2026#15 of 23

Sources

• github.com/nix-community/harmonia· checked 4 Oct 2026
• github.com/nix-community/harmonia/releases· checked 4 Oct 2026
• github.com/nix-community/harmonia/blob/main/LICENS· checked 4 Oct 2026